EP 0651360 B1 19990428 - System and method for remote monitoring
Title (en)
System and method for remote monitoring
Title (de)
System und Verfahren zur Fernüberwachung
Title (fr)
Système et procédé de surveillance à distance
Publication
Application
Priority
US 14303193 A 19931029
Abstract (en)
[origin: EP0651360A1] A communication and processing system (10) for monitoring signals transmitted from personal transmitter units (PTUs 20) to determine whether alarm or emergency conditions have occurred and whether scheduled communications from PTUs (20) are missing. The PTUs (20) detect various alarm and emergency conditions and transmit data communications to a field node (18). The field node (18) receives data communications from all PTUs (20) within range. If a data communication indicates an emergency condition, a field report message is immediately sent to a control facility (12). If a communication indicates an alarm condition, an audible alarm is sounded at the field node but no message is sent to the control facility yet. If the alarm condition is not corrected within a predetermined period of time, a message describing the alarm condition is sent to the control facility (12). When scheduled communications from a PTU (20) are not received at the field node (18), the situation is treated as an alarm condition. <IMAGE>
IPC 1-7
IPC 8 full level
G08B 21/22 (2006.01)
CPC (source: EP US)
G08B 21/22 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 0651360 A1 19950503; EP 0651360 B1 19990428; CA 2132062 A1 19950430; DE 69418140 D1 19990602; DE 69418140 T2 19991111; US 5416468 A 19950516
DOCDB simple family (application)
EP 94114985 A 19940923; CA 2132062 A 19940914; DE 69418140 T 19940923; US 14303193 A 19931029